One of the most notable parts of the Big 12's press release Friday welcoming West Virginia to the conference is what it doesn't say:
Beginning with the 2012-2013 season it is expected that the Big 12 conference will be comprised of 10 Universities – Baylor, Iowa State, Kansas, Kansas State, Oklahoma, Oklahoma State, TCU, Texas, Texas Tech and West Virginia.
There's no mention of Missouri, which has yet to officially leave the conference, although it has had its foot out the door for weeks now.
And while West Virginia, the school that is replacing it in the Big 12, may still be caught in legal entanglements as it fights it way out of the Big East, there appears to be nothing holding Missouri back from joining the SEC now.
The Tigers have been in the same conference with Kansas, Kansas State and Iowa State for nearly a century; how their move affects those rivalries remains to be seen.